Snap fastener



Jan. 3, 1928.

1,654,806 F. D. HARDEsTY SNAP FAS TENER Filed Dec. 3l, 1921 WMM Patented Jan. 3, 19.28.

- UNITED Y.Siae-Tras ymanners n. nAnDnsTY, or nanou, omo.

SNAP FASTENER. I

V.ippncfmon nlednecember a1, 1921.- /serial No. 526,283."

The presentinvention'relatesto snap asteners and particularly to such-fasteners. as are adapted for use inattaching vehicle cur-` tains.Y

Among the objects .of the invention are to providepositivelocking of the parts of thev fastener when in engagement and yet permit ready disengagement of the parts when desired.

that permits easy engagement by snapping the partstogetherforming a positive.` lock', but which permits easy disengagement.

AStill another object vis'to producea fasi" tener that will permit engagement of theparts only-When the parts. are in properv position. Y o

Further objects and advantages of the present invention will be apparent from the 2o following description, reference being had to the accompanying drawing, wherein a preferredv embodiment of the' present inventionisclearly shown. i In the drawing: l 1 I 'I s ',Fig. 1,Y is a-vertical section through the male and female members 'ofA the fastener with the male element in elevation., l i Fig. 2 is a plan view of the fastener.

Fig. 3 is .aV plan viewof the male element. Fig. 4 Vis a view of the male element from underneath. s s f 'FigQ 5 is a side elevation of the malefelement.V Fig. 6 is a plan view of the bearing'plate. Fig. is a, planview of the toprplate of the-male member." i Y Fig. 8'shows the approximate' form of blank used in forming the male element. 5

Fig. 9 shows a fragmental viewsimilar to Fig. 8 but r'showing afvmodified form of barb or tooth. i A I Fig. 10 is a plan view ofthe female membei".shown"inFigs. 1 and 12. v Fig.A 11 is 'a1 plan view of the bottom plate of the' malemember. y 12gshows the `male member in elevation and a4 slightly diierent form of female member in vertical section yand also shows in section what might vbe termed a secondary77 member. y Fig..13 isV aplan view of the top plateof.- the secondary member. ,Y Y Y Fig. 14 is a view similar toV Fig. ,1 but showing a slightly'n1odied form 'of fas; tener.

Another object is to provide afastener' in' the! embodiment" 'of the. invention shownin the drawings a? male element 2() is produced from a blank of the approximate form shown in Fig. 8.v This. blank" is punched out of sheet metal and formed in,

one`or more operations to' produce an Velement such :as is'shown separately in Figs." 3,`

4 and 5. `In `forming the blank theportion 22 between parts 23 and .26,is formedinto semicrrcular section to formi one half 4of 'that-'part of the Apost above thefdiscportion,

the post being mainlycylindrical 'and merging into the fiat wing portion above through" an intermediate conical portion.

The port-ion 24 between part Vformed into the flat bea-ringdisc portion as n 23 barbs` l25 1s formed similar-to part 22 so that the. postfis 1n effect cylindrical'below the-wing shownv at 23 andthe. barbs 25 turnedV back andformed to lie onthe circumference of the cylindrical `portion-of the postas "shown in`Figj4. w i

. corresponding yportionsfsuitably shaped'to .makey theother halfA of the male element when the blank is bent upon the line. as indicated in Figs 4and- 5,y thetwo suitably shaped l ends 26 'remaining flat,y and Vforming awing portionfor themale element'. 1 ,It Willbe noted from Figs. 4 and 5 that they lower portion of thei male element 2O presents the generalform of a'flattened rod with notches upon -the flattened sides,y the purpose of which ,willbe described later.A

Male member v20 `is secured in operative relation 4to'thecurtainrorother articleito be fas'tened'by thefmeans shown in Figs. 1, 2, 6, 7and11. fr 'Y The member; 20 ,1 rests upon a bearing washer or plate 45 such as is shown in Fig.

6,' lwhich vwasher rests upon the fabric *46 of Fi`g.j11) upon. the :underside 'of theffabric Y 46,'l which. plate Vis y'providedwith tongues yslots 48. This (assembly. is

50 adapted: to penetrate the fabric; andenter slotsv 48, being -then'clinched f hefema'le element .shownin AFigs'l and '.10 consists of cupped disc 35 having a central 'perforation 136 and provided Withga spring member 87 which may be of any suitable form and secured in suitable fashion to the under side of the member 35.

single wire bent in the middle to give a substantial sized loop 38 and vet have the sides parallel, the ends being` bent inwardly as at 39 and over-lapped. The sprin'gii' is then secured to member by punching out ears 40 and bending the latter over thewire of the spring 37 as is clearly indicatedy in Fig. l0.'y l' `This form-of female member is also provided with a flange 41- for the purpose of Further, inrFig.9 is shown a Vmodified' form of tooth or barb. In this form, the tooth. 25 is shown as being provided with a sloping vor angular edge 70. 'The purpose ofr thisis to cause ths spring 3'( to exert-a downward pull upon member 20 so as to auto- `matically press the male member toward the female member when they are in locking position. y

-The operation of lthe fastener is thought to' be Amore or less obvious from the description andonly the followingpoints will .be mentioned'.

In securing the two members together it will be sufficient to snapV thelower end of post 20-into engagement with spring 37' in 'member 35, the two parallel parts of spring 37V dropping into the notch between the teeth 25 or above -t-he uppermost pairs. This will result in a positive lockbetween the twoa-nd one that will not `release, itself.

Release of the two Ymembers maybe aci complished by ak quarterV rotation of the post- 201 and withdrawalfrom member 35.

The quarter rotation of post 20 causes' the spring 37 to be spread apart and the parallel partsthereof to ride u on thetwosides of post 20 vunprovided wit notches,thus offeri ing n o resistancel to its withdrawal.:

Another point to be notedl is that, in the preferred embodiment of the invention, the

Y fiattened lower end of post. 20 is' wider than the normaldistance between the parallelv parts'of spring-37. This will prevent the insertion of post 20 into element' unless the former is in =at least the approximate lookingposition. 7 This feature isdevised to prevent engagement of-the two members inv any Yposition other than the locking position.

, In cases where it is necessary or advisable In the present embodiment thespring 37 is of a tov fastenan additional curtainV with such fasteners the additional curtain may be provided with a top plate such Vas that shown Y in Fig. land a corresponding bottom plate 6G (not shown in detail) provided with suit-- ableears for securing the two to the fabric of the curtain. Thelatter will of course be suitably;perforated: "These plates will be perforated and slotted as in Fig. 13 so as to pass .over the wing portion of post 2 0 and will beso positioned on thesecond curtain: as torequire the post 20 vtovbe in release po-1 sition when it is Vdesired to secure the second curtain. `The second curtain having been placed over the wing portion of post 20,

the latter is turned to locking position andy inserted into member 35 thusattaching both curtains to the element upon which member 35 is secured. a While the form of mechanism; lherein shown and. described, constitutes ay preferredy form of embodiment ofthe presentinven-V tion, it is to be understood that Iother forms might beA adopted, alll coming within .the

scope of the claims which follow.

What I claim is as follows: Y

,1. A snap fastener. comprising'a malen member and a female/member, the male.

member-'being flattened and provided upon; itsffiattenedsides with means adapted to lock it within the female member, the female member being provided with cooperating locking means constructed` and arranged to f prevent entranceV ofthe male member unless the latter'is approximately inlocking position. i l

2. `A snap member. and a female 'memberfthe male member-beingv fiattened and provided only .upon its flattened sides with means adapted tolocli it within the female membelgthe female member beingprovided with cooperating locliingmeans constructed and arranged to prevent entrance of the male-memberjunless the latter is approximatelyv in locking fastener vcomprising a malel Y position, the cooperating locking means lbeing sufciently resilient to permit rotation of Vthemale member` to a position in which the lockingmeans cannot, cooperate Vto lock the members together. i

`3 In a snap fastener, a male member comprising a revoluble post madeffrom ajfflat metal blank, the post `being formed; with a cylindrical portion having a disc portion. intermedia'te theends thereof, the post also.

terminating at one end withaattened por-V tion and at Lthe other end .with la part hav-V ing ldiametrically-opposed teeth or.v notches on two sides thereof. l 4L. 1A male element for snapfasteners com-V nisinq a c lindrical ortion adise like ro-' 7 Iiection ijntermedia'te'the Vends thereofythe;

cylindricalr portion terminating at one end in a wing portion and at the otherfendl a attened part provided withy teeth,`the fiat`l 1,654,806 l llf3 tened part including theteeth lying wholly Within an extension of the cylinder.

5. In a snap fastener, a male member comprising a revoluble post made from a flut 3 metal blank, the post being formed with a ycylindrical portion having a dise portion intermediate the ends thereof7 the post also terminating at one end with a flattened portion and at the other end With a part having diametrically opposed teeth or notches 10 on two sides thereof5 end means providing bearing surfaces for the disc portion.

` In testimony. whereof I hereto .fixV my slgnature. y

vFRMICIS D. rIARDIESiY,v 

